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參數(shù)資料
型號: 44780
廠商: Hitachi,Ltd.
英文描述: Dot Matrix Liquid Crystal Display Controller/Driver
中文描述: 點(diǎn)陣式液晶顯示控制器/驅(qū)動器
文件頁數(shù): 51/59頁
文件大小: 316K
代理商: 44780
HD44780U
55
6. Applies to input pins and I/O pins, excluding the OSC1 pin.
7. Applies to I/O pins.
8. Applies to output pins.
9. Current flowing through pull–up MOSs, excluding output drive MOSs.
10. Input/output current is excluded. When input is at an intermediate level with CMOS, the excessive
current flows through the input circuit to the power supply. To avoid this from happening, the input
level must be fixed high or low.
11. Applies only to external clock operation.
Oscillator
OSC1
OSC2
0.7 VCC
0.5 VCC
0.3 VCC
Th
Tl
t rcp
t fcp
Duty =
100%
Th
Th + Tl
×
Open
12. Applies only to the internal oscillator operation using oscillation resistor R
f.
OSC1
OSC2
R
f
R :
f
75 k
± 2% (when V
CC = 3 V)
91 k
± 2% (when V
CC = 5 V)
500
400
300
200
100
50
100
150
(91)
R (k )
f
f
(kHz)
OSC
VCC = 5 V
500
400
300
200
100
50
100
150
R (k )
f
f
(kHz)
OSC
VCC = 3 V
typ.
Since the oscillation frequency varies depending on the OSC1 and
OSC2 pin capacitance, the wiring length to these pins should be minimized.
(270)
(75)
typ.
max.
min.
max.
min.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
447-800 功能描述:環(huán)形MIL規(guī)格后蓋 RoHS:否 制造商:Amphenol PCD MIL 類型:MIL-DTL-38999 III, IV 系列:AS85049 產(chǎn)品類型:Environmental EMI/RFI Backshells 外殼類型:Straight 外殼大小:18 外殼材質(zhì):Aluminum Alloy
447802-1 制造商:TE Connectivity 功能描述:SCREW 4-40 - Bulk
447-804M0503 功能描述:環(huán)形MIL規(guī)格后蓋 RoHS:否 制造商:Amphenol PCD MIL 類型:MIL-DTL-38999 III, IV 系列:AS85049 產(chǎn)品類型:Environmental EMI/RFI Backshells 外殼類型:Straight 外殼大小:18 外殼材質(zhì):Aluminum Alloy
447-804NF0503K 功能描述:環(huán)形MIL規(guī)格后蓋 RoHS:否 制造商:Amphenol PCD MIL 類型:MIL-DTL-38999 III, IV 系列:AS85049 產(chǎn)品類型:Environmental EMI/RFI Backshells 外殼類型:Straight 外殼大小:18 外殼材質(zhì):Aluminum Alloy
447-804NF0603B 功能描述:環(huán)形MIL規(guī)格后蓋 RoHS:否 制造商:Amphenol PCD MIL 類型:MIL-DTL-38999 III, IV 系列:AS85049 產(chǎn)品類型:Environmental EMI/RFI Backshells 外殼類型:Straight 外殼大小:18 外殼材質(zhì):Aluminum Alloy
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